Grease-cup



H. C. KESTEL.

GREASE CUP. APPLICATION FILED MAY 24, I919.

. 1,364,284. v Patented Jan. 4,1921.

A407 Q /W UNITED PATENT OFFICE.

HEN RY C. KESTEL, OF TOLEDO, OHIO, ASSIGNOR TO THE K. M. MANUFACTURINGCOMPANY, OF TOLEDO, OHIO, A CORPORATION OF OHIO.

GREASE-CUP.

To all whom it may concern: 1

Be it known that I, HENRY C. -Kns'rnL, a citizen of the United States,and a resident of Toledo, in the county of Lucas and State of Ohio, haveinvented certain new and useful Grease-Cups; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to the characters of reference marked thereon, which form a part ofthis specification.

My invention has for its object to provide in connection with a greasecup which can be readily filled and snapped into position in axialalinement with a plunger having a hollow stem through which the greasemay pass to the parts to be lubricated, a floating ring located on theplunger that will readily conform to the shape of the cup and a meanswhereby escape of the grease by the plunger and stem is prevented.Further objects and advantages of the invention will appear from thedescription forming a part of this specification and upon theexamination of the drawings.

The invention may be contained in grease cups of different forms. Toillustrate a practical application of my invention I have selected agrease cup containing the invention as an example of the structurecontaining my invention and shall describe it here inafter. Thestructure selected as an example is illustrated in the accompanyingdrawings.

Figure 1 of the drawings, illustrates a sectional view of the grease cupshowing the plunger down at its lowest point and the cap or cup properin position for removal from the supporting part of the cup. Fig. 2 is asectional view of the plunger within the cup proper and in position tolock the cup from displacement. Fig. 3 is a sectional view taken on theline 3-3 indicated in Fig. 2.

1, in the figures, is the stem that may be threaded into a part of themachine that is to be lubricated by the grease that is inserted in thecup. it is provided with the threads 2 whereby it may be screwed into atapped portion of the machine. A pressed steel shell 3 is secured aroundthe top of the stem 1 by means of the shoulder 4 and Specification ofLetters Patent.

Patented Jan. 4, 1921.

Application filed May 24, 1919. Serial No. 299,557.

an inner shell 5 that is forced into the shell 3. The shell 3 isprovided with a lip 6 that extends around a little more than thesemicircumierence of the upper edge of the shell 3, while the cup 7 isprovided with a flaring edge 8 that fits beneath the flange 6 andinasmuch as the flange 6 extends beyond the semi-circle of the upperedge of the shell 3 the cup 7 is snapped into position by forcing theflange 8 underneath the lip 6 and so that the cup 7 will be in axialalinement with the shell 3. i

The portions of the lips 6 that extend be yond the semi-circle of theupper edge of the shell 3 will thus hold the cup 7 in position. The cup7 however, is locked in position by movement of the plunger or piston 9into the interior of the cup 7.

The plunger 9 is preferably formed of I two sheet metal parts 10 havingthe webs 11 and the flaring edges 12. The sheet metal parts that formthe plunger are laced back to back and thus leave a space etween theflaring portions 12 in which is placed a cork ring 13. The cork ring 13is loosely placed in the plunger 9 and forms a floating rlng whichpermits the ring 13 to readily conform to the shape of the interiorsurface of the cup 7 notwithstanding the fact that it may be irregularas to its circularity and slightly out of axial alinement. By thisarrangement the cork ring 13 by means of its elasticity or resiliencywill be tightly pressed throughout its entire periphery against theinner cup 7 by the pressure that is exerted on the ring by either of thedisks 10 that form the plunger 9. This will prevent the escapement ofthe grease by the plunger when the plunger is raised within the cup.

The stem 14 of the plunger is made hollow and is secured to the plunger9 by the pressure of the flaring end 15 which is located in openingsformed in the members 10. The stem 15 is threaded, the thread on oneside 16 of the stem, however, being cutable area of contact around thestem if desired. Rotation of the shells 8 and will through the operationof theflattened parts of the shell 5 and the stem 14, cause rotation ofthe stem 14 and consequently the stem 14 and the plunger 9 will beraised or lowered within the cup 7. As soon as the upper edge of theplunger 9 rises above the lower edge of the cup 7 the cup 7 will belocked from displacement from its connection with the shell 3, by.reason of location of the plunger 9.

As the plunger 9 is raised the grease will be forced down through thehollow stem 14 of the plunger and forced down through the openings thatcommunicate with the bearings that are to be lubricated. The end 17 ofthe stem 14 from which no portion of the threads are removed willprevent the escape of the grease by the stem back into the shell 5 orthe space located. below the plunger 9 which might otherwise occur ifthe stem 14 had the thread removed throughout its entire length on oneside.

By my invention is thus provided an exceedingly eflicient grease cupthat may be readily secured as by merely springing-the cup intoposition. Care of placement so as to match threads is thus avoided andthe inconvenience caused by the burringof thread ends is thuseliminated.

I claim: v

1. In a grease cup, a cup member, a plunger, the plunger having a freefloating ring of resilient material to conform to the shape of the cupmember and transversely shiftable relative to the plunger,.means formoving the plunger and cup member relative to each other.

2. In a grease cup, a sheet metal cup member, a plunger, the plungerhaving a free floating ring of cork'to conform tothe shape of the cupmember and transversely shiftable relative to the plunger, means formoving the plunger relative to the cup member.

3. In a grease cup, a supporting stem, a steel pressed shell rotatablysupported on the said stem and having an inwardly extendingsemi-circular lip, a steel pressed shell located within the first namedshell for securing the first named shell in rotatable position upon thestem, the upper edge of the second named shell extending to a pointslightly removed from the lip on one side of the first named shell andto the edge of the first named shell on the other side of thefirst'named shell, a cup member having a flaring flange located alongits lower edge and secured by the said lip and between the said lip andthe upper edge of the second named shell, a plunger movable in the cupand within the second named shell and hav-' ing a stem guided by theupwardly extending flange located in the second named shell.

4. In a grease cup, a supporting stem, a cup member rotatably connectedto the grease cup, a plunger, a threaded stem connected to the plungerand threaded into the supporting stem, the plunger stem having thethread removed from a part of one side thereof, the thread beingcontinuous at the lower end of the stem to prevent the escape of thegrease between the "said stems.

5. In a grease cup, a supporting stem, a cup member rotatably connectedto the grease cup, a plunger, a threadedstem connected to the plungerand threaded into the supporting stem, the plunger stem having thethread removed from a partof one side thereof, the thread beingcontinuous at the lower end of the stem, a plunger having a 'floatingring of resilient material.

In testimony whereof I have hereunto signed my name to thisspecification.

HENRY C. KESTEL.

